what is the meaning of ac relay and dc relay EDIT: a DC relay is simply a coil and core that pulls on an armature. An AC relay usually needs a shaded-pole core (couple of copper loops) to prevent the armature from vibrating at 60 cycles or so. The core, also, is laminated steel like a transformer; so is the armature to help contain the magnetic field. You should not substitute a DC rated relay for an AC , but the reverse should be ok, if voltage and current ratings are the same.
Armature is a rotating part of the machine, the coil which wound in the core of that rotating part.
An armature, often referred to as a rotor in the context of electric motors and generators, is the rotating component that generates electromagnetic force. In electric machines, the armature typically consists of coils of wire wound around a core, which produces electricity when it moves through a magnetic field. In motors, the armature receives electrical current, creating a magnetic field that interacts with the stator to produce motion. The design and function of the armature are crucial for the efficiency and performance of the machine.
this is wer the armature conductors ar being mounted,therefor it helps the flexibility of armature conductors.
choke
Instead of a single piece of metal, the armature is made up of laminated thin metal plates. The thickness of the laminations is determined by the supply frequency. They are approximately 0.5mm thick. For the armature core, silicon steel laminates are used to reduce eddy currents and hysteresis losses.
to reduce the eddy current loss in the machine
what is the meaning of ac relay and dc relay EDIT: a DC relay is simply a coil and core that pulls on an armature. An AC relay usually needs a shaded-pole core (couple of copper loops) to prevent the armature from vibrating at 60 cycles or so. The core, also, is laminated steel like a transformer; so is the armature to help contain the magnetic field. You should not substitute a DC rated relay for an AC , but the reverse should be ok, if voltage and current ratings are the same.
Armature is a rotating part of the machine, the coil which wound in the core of that rotating part.
An armature is a component in an electric motor that interacts with the magnetic field to produce motion. It consists of windings where electrical current flows, creating a magnetic field that interacts with the field from the stator to generate torque and rotate the motor.
The iron core of Transformers is laminated to reduce eddy currents, which cause a loss of energy.
vibration of the transformer's laminated core in response to the AC magnetic field.
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by using the laminated core
The geographic poles and magnetic poles of the Earth are different because they are determined by different factors. The geographic poles are the points on the Earth's surface where its axis of rotation intersects, while the magnetic poles are based on the Earth's magnetic field generated by its core. The movement of molten iron in the outer core creates the Earth's magnetic field, which can cause the magnetic poles to shift and not align perfectly with the geographic poles.
Eectrons moving in the wire that is why it is called electricity. Electrons moving in a circle around the iron core called the armature produces a magnetic field. This produces a north and south pole. The poles of the armature are attracted to the opposite poles of the magnets, causing the armature to spin. See this website for good diagram of interiofr of motor http://electronics.howstuffworks.com/motor1.htm